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Tech 21

Tech 21 SansAmp Character Plus Mop Top Liverpool live sound amplifier

SKU CH-4BVQ-F6RS5

Analog preamp pedal combining Vox-style amp and Rangemaster booster tones with speaker simulation and XLR output

  • 100% analog pre-amp drives power amps, mixers or PA systems
  • Independent SansAmp and effects sections let you run either alone
  • Rugged all-metal housing at 7.75 x 2.5 x 1.25 inches weighs 12 oz
  • Built-in speaker simulation plus 3-band active EQ and XLR output
  • 9 V DC power supply included for immediate live use

Mop Top Liverpool analog pre-amp

The Tech 21 SansAmp Character Plus Mop Top Liverpool is a 100% analog pre-amp pedal that combines a Vox-style amplifier emulation with a Rangemaster Booster-style effect. Its Character control sweeps through a full spectrum of British Invasion tones, from clean chime to Bohemian rock crunch. The SansAmp and effects sections operate independently, allowing the pre-amp or the boost to be used separately with other gear. A built-in speaker simulation and three-band active EQ are tailored to the specific cabinet voicing.

Stand-alone pre-amp for PA or power amp

This unit replaces a traditional amplifier head when driving a power amp, studio mixer, or PA system directly from the stage or studio. The jump is worth it when a guitarist needs authentic vintage British tones without the weight, maintenance, or volume of a tube amp and cabinet. The independent boost section also replaces a standalone treble booster pedal, reducing pedalboard clutter. It is not for players who require high-gain modern metal voicings or digital modelling with preset storage and MIDI control.

Check signal chain and power needs

Before ordering, verify that your rig can accommodate a pedal-format pre-amp at the end of your effects chain or in an amplifier effects loop. Confirm you have a standard 9 V DC centre-negative power supply available, as the included unit requires mains power. Ensure your mixer, audio interface, or power amp accepts a balanced XLR line-level signal or an unbalanced 1/4" output for the speaker-simulated feed.

How it compares

Measured against everything we stock in Stage & PA Amplifiers, at today’s prices. Recalculated every night.

Price $182.99
Pricier than about 72% of the 236 comparable items (median $30.49).

Specifications

No published specifications for this item yet.

Questions about this item

What are the exact dimensions and weight of the Mop Top Liverpool pedal?

The rugged all-metal housing measures 7.75 inches long, 2.5 inches wide, 1.25 inches high and weighs 12 oz.

How do I connect this pedal to a PA system or mixer for live use?

Use the XLR output to run a balanced line directly into a PA system or studio mixer; the built-in speaker simulation is individually tuned for the Vox-style voicing.

Does the 9 V DC power supply come in the box, and what polarity does the pedal require?

Yes, a 9 V DC power supply is included; the pedal operates on standard centre-negative 9 V DC power.

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